ABSTRACT
One way of improving the range resolution of microwave imaging systems is to synthesize the ultra wideband signal from a regular set of narrowband modulated pulses. This chapter discusses a train of linear frequency modulated pulses with equal carrier frequency steps between pulses. There is a significant growth of interest in high-resolution microwave imaging systems for non-destructive studying of composed objects. One of the important components of a microwave imaging system is a high-resolution short-range radio ranging unit, which includes the signal forming and processing part, transceiver, and antenna subsystem. Chirp signal compression requires relatively high analog-to-digital conversion rate as well as enough computational resources. The most successful experiments were made using ultra wideband pulsed signals and continuous wave stepped frequency signals. One of the important components of a microwave imaging system is a high-resolution short-range radio ranging unit, which includes the signal forming and processing part, transceiver, and antenna subsystem.
